1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/*
* Listener.cpp
*
* Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Listener.h"
#include "ServerConnection.h"
#include <cerrno>
#include <cstring>
#include <fcntl.h>
namespace Mad {
namespace Net {
Listener::Listener(const std::string &x905CertFile0, const std::string &x905KeyFile0, const IPAddress &address0) throw(ConnectionException)
: x905CertFile(x905CertFile0), x905KeyFile(x905KeyFile0), address(address0) {
gnutls_dh_params_init(&dh_params);
gnutls_dh_params_generate2(dh_params, 768);
sock = socket(PF_INET, SOCK_STREAM, 0);
if(sock < 0)
throw ConnectionException("socket()", std::strerror(errno));
// Set non-blocking flag
int flags = fcntl(sock, F_GETFL, 0);
if(flags < 0) {
close(sock);
throw ConnectionException("fcntl()", std::strerror(errno));
}
fcntl(sock, F_SETFL, flags | O_NONBLOCK);
// Don't linger
struct linger linger = {1, 0};
setsockopt(sock, SOL_SOCKET, SO_LINGER, &linger, sizeof(linger));
if(bind(sock, address.getSockAddr(), address.getSockAddrLength()) < 0) {
close(sock);
throw ConnectionException("bind()", std::strerror(errno));
}
if(listen(sock, 64) < 0) {
close(sock);
throw ConnectionException("listen()", std::strerror(errno));
}
}
Listener::~Listener() {
for(std::list<ServerConnection*>::iterator con = connections.begin(); con != connections.end(); ++con) {
(*con)->disconnect();
delete *con;
}
shutdown(sock, SHUT_RDWR);
close(sock);
gnutls_dh_params_deinit(dh_params);
}
std::vector<struct pollfd> Listener::getPollfds() const {
std::vector<struct pollfd> pollfds;
struct pollfd fd = {sock, POLLIN, 0};
pollfds.push_back(fd);
for(std::list<ServerConnection*>::const_iterator con = connections.begin(); con != connections.end(); ++con)
pollfds.push_back((*con)->getPollfd());
return pollfds;
}
ServerConnection* Listener::getConnection(const std::map<int,const short*> &pollfdMap) {
// TODO: Logging
int sd;
struct sockaddr_in sa;
socklen_t addrlen = sizeof(sa);
while((sd = accept(sock, (struct sockaddr*)&sa, &addrlen)) >= 0) {
connections.push_back(new ServerConnection(sd, IPAddress(sa), dh_params, x905CertFile, x905KeyFile));
addrlen = sizeof(sa);
}
for(std::list<ServerConnection*>::iterator con = connections.begin(); con != connections.end(); ++con) {
std::map<int,const short*>::const_iterator events = pollfdMap.find((*con)->getSocket());
if(events != pollfdMap.end()) {
if(*events->second)
(*con)->sendReceive(*events->second);
}
else
(*con)->sendReceive();
}
for(std::list<ServerConnection*>::iterator con = connections.begin(); con != connections.end();) {
if(!(*con)->isConnected()) {
delete *con;
connections.erase(con++); // Erase unincremented iterator
continue;
}
if(!(*con)->isConnecting()) {
ServerConnection *connection = *con;
connections.erase(con);
return connection;
}
++con;
}
return 0;
}
}
}
|
